Yintoni i-Starch Ether?

I-starch ether luhlobo oluguquliweyo lwesitatshi, i-carbohydrate ephuma kwizityalo. Olu tshintsho lubandakanya iinkqubo zeekhemikhali ezitshintsha ulwakhiwo lwesitatshi, nto leyo ephumela kwimveliso eneempawu eziphuculweyo okanye eziguquliweyo. Ii-starch ethers zisetyenziswa kakhulu kwizicelo ezahlukeneyo zoshishino ngenxa yeempawu zazo ezizodwa. Ezinye iintlobo eziqhelekileyo zee-starch ethers ziquka i-hydroxyethyl starch (HES), i-hydroxypropyl starch (HPS), kunye ne-carboxymethyl starch (CMS). Nazi iinkalo eziphambili zee-starch ethers:

1. Utshintsho lweekhemikhali:

• Isitatshi seHydroxyethyl (HES): Kwi-HES, amaqela e-hydroxyethyl aziswa kwimolekyuli yesitatshi. Olu tshintsho luphucula ukunyibilika kwamanzi kwaye lwenza ukuba ifaneleke ukusetyenziswa kumayeza, njengokwandisa umthamo weplasma, nakwezinye izinto.
• Isitatshi seHydroxypropyl (HPS): I-HPS iveliswa ngokungenisa amaqela e-hydroxypropyl kwisakhiwo sesitatshi. Olu tshintsho luphucula iipropati ezifana nokunyibilika kwamanzi kunye nokukwazi ukwenza ifilimu, nto leyo eyenza ukuba ibe luncedo kumashishini afana nokutya, amalaphu, kunye nokwakha.
• Isitatshi seCarboxymethyl (CMS): I-CMS yenziwa ngokwazisa amaqela e-carboxymethyl kwiimolekyuli zesitatshi. Olu tshintsho lunika iipropati ezinje ngokuphuculwa kokugcinwa kwamanzi, ukuqina, kunye nozinzo, okwenza ukuba ibe luncedo kwizicelo ezifana nezincamathelisi, amalaphu, kunye namayeza.

2. Ukunyibilika kwamanzi:

• Ii-starch ethers zihlala zibonisa ukunyibilika kwamanzi okuphucukileyo xa kuthelekiswa ne-starch yendalo. Oku kunyibilika okuphucukileyo kuluncedo kwiifomyula apho kufuneka ukunyibilika okanye ukusasazwa kwamanzi ngokukhawuleza.

3. Iimpawu zokuxinana kunye nokutyeba:

• Ii-starch ethers zisebenza njengezithambisi ezisebenzayo kwiifomyula ezahlukeneyo. Zinegalelo ekwandeni kwe-viscosity, nto leyo ebaluleke kakhulu kwiindlela ezifana nezincamathelisi, ii-coating, kunye neemveliso zokutya.

4. Ubuchule bokwenza ifilimu:

• Ezinye ii-starch ethers, ingakumbi i-hydroxypropyl starch, zibonisa iimpawu zokwenza ifilimu. Oku kuzenza zilungele ukusetyenziswa apho kufunwa khona ukwenziwa kwefilimu encinci neguquguqukayo, njengakwimizi-mveliso yokutya kunye namayeza.

5. Iimpawu zokuzinzisa kunye nokuBopha:

• Ii-starch ethers zihlala zisetyenziswa njengeziqinisi kunye nezihlanganisi kwiindlela ezahlukeneyo zokuxuba. Zinceda ukuphucula uzinzo lwee-emulsions kwaye zinegalelo ekuhlanganeni kweemveliso ezifana neepilisi zamayeza.

6. Izicelo zokuncamathelisa:

• Ii-starch ethers zisetyenziswa kwi-adhesives, zombini kwishishini lokutya (umz., kwiindawo ezithatha indawo ye-gum arabic) kunye nakwizinto ezingezizo zokutya (umz., kwi-adhesives zephepha kunye nezokupakisha).

7. Ubungakanani belaphu:

• Kwishishini lempahla, ii-starch ethers zisetyenziswa kwiifomyula zobungakanani ukuphucula amandla kunye nobuthambile beentambo ngexesha lokuluka.

8. Izicelo zamayeza:

• Ii-starch ethers ezithile ziyasetyenziswa kwimixube yamayeza. Umzekelo, i-hydroxyethyl starch isetyenziswa njenge-plasma volume expander.

9. Izixhobo zokwakha nezokwakha:

• Ii-starch ethers, ingakumbi i-hydroxypropyl starch kunye ne-carboxymethyl starch, zisetyenziswa kushishino lokwakha, ingakumbi kwi-dry mix mortar formulations. Zinegalelo ekuphuculweni kokunamathela, ukusebenza kakuhle, kunye nokugcinwa kwamanzi.

10. Ishishini lokutya:

11. Ukubola kwezinto eziphilayo:

12. Izinto eziqwalaselwayo kwiNdalo:

Kubalulekile ukuqaphela ukuba iimpawu ezithile kunye nokusetyenziswa kwee-starch ethers kunokwahluka ngokuxhomekeke kuhlobo lotshintsho kunye nokusetyenziswa okucetywayo. Abavelisi banikezela ngeenkcukacha zobugcisa ezineenkcukacha zohlobo ngalunye lwe-starch ether ukukhokela abenzi beefomyula ekukhetheni uhlobo olufanelekileyo lwezicelo zabo ezithile.